diff --git a/lib/imc_block.hpp b/lib/imc_block.hpp
index 9838c27..7a8d336 100644
--- a/lib/imc_block.hpp
+++ b/lib/imc_block.hpp
@@ -40,9 +40,6 @@ namespace imc
     // w.r.t. to first byte of block (=0)
     std::vector<imc::parameter> parameters_;
 
-    // particular imc object represented by this block
-    // imc::rawobject imc_object_;
-
   public:
 
     // constructor
@@ -71,7 +68,6 @@ namespace imc
 
       try {
         parse_parameters();
-        // parse_object();
       } catch (const std::exception& e) {
         throw std::runtime_error(
           std::string("block: failed to parse parameters/objects: ") + e.what()
@@ -106,19 +102,6 @@ namespace imc
       parameters_.back().end( this->end_ - 1 );
     }
 
-    // pass buffer and parameters associated to block to generate corres. object
-    // void parse_object()
-    // {
-    //   try {
-    //     imc_object_.parse(thekey_,buffer_,parameters_);
-    //   } catch (const std::exception& e) {
-    //     throw std::runtime_error(
-    //       std::string("failed to parse imc::object for key ")
-    //       + thekey_.name_ + std::string(": ") + e.what()
-    //     );
-    //   }
-    // }
-
   public:
 
     // access members
@@ -163,7 +146,7 @@ namespace imc
     }
 
     // get info string
-    std::string get_info(bool include_object = true, int width = 20)
+    std::string get_info(int width = 20)
     {
       // summarize parameters in single string
       std::string prsstr("{");
@@ -183,14 +166,6 @@ namespace imc
         <<std::setw(width)<<std::left<<"buffersize:"<<buffer_->size()<<"\n"
         <<std::setw(width)<<std::left<<"parameters:"<<prsstr<<"\n";
 
-      // include meta data of specific object
-      // if ( include_object )
-      // {
-      //   ss<<std::setfill('-')<<std::left<<std::setw(60)<<""<<std::setfill(' ')<<"\n";
-      //   ss<<thekey_.description_<<"\n";
-      //   ss<<imc_object_.get_info()<<"\n";
-      // }
-
       return ss.str();
     }
 
diff --git a/lib/imc_key.hpp b/lib/imc_key.hpp
index 37e23da..ed865e7 100644
--- a/lib/imc_key.hpp
+++ b/lib/imc_key.hpp
@@ -61,37 +61,6 @@ namespace imc
 
   };
 
-  // define (non)critical markers/keys
-  // std::map<std::string,key> keys = {
-  //
-  //   // critical keys
-  //   {"CF2", key(true,"CF","format version and processor",1)},
-  //   {"CK1", key(true,"CK","start of group of keys",1)},
-  //   {"CB1", key(true,"CB","group of channels",1)},
-  //   {"CT1", key(true,"CT","text definition",1)},
-  //   {"CG1", key(true,"CG","group of components",1)},
-  //   {"CD1", key(true,"CD","abscissa description",1)},
-  //   {"CD2", key(true,"CD","abscissa description",2)},
-  //   {"CZ1", key(true,"CZ","scaling of z-axis",1)},
-  //   {"CC1", key(true,"CC","start of component",1)},
-  //   {"CP1", key(true,"CP","buffer, datatype and samples of component",1)},
-  //   {"Cb1", key(true,"Cb","buffer description",1)},
-  //   {"CR1", key(true,"CR","permissible range of values in component",1)},
-  //   {"CN1", key(true,"CN","name and comment of channel",1)},
-  //   {"CS1", key(true,"CS","raw binary data",1)},
-  //   {"CI1", key(true,"CI","single numerical value",1)},
-  //   {"Ca1", key(true,"Ca","add reference key",1)},
-  //
-  //   // noncritical keys
-  //   {"NO1", key(false,"NO","origin of data",1)},
-  //   {"NT1", key(false,"NT","timestamp of trigger",1)},
-  //   {"ND1", key(false,"ND","(color) display properties",1)},
-  //   {"NU1", key(false,"NU","user defined key",1)},
-  //   {"Np1", key(false,"Np","property of channel",1)},
-  //   {"NE1", key(false,"NE","extraction rule for BUS channels",1)}
-  //
-  // };
-
   const std::vector<key> keys = {
 
     // critical keys
diff --git a/lib/imc_raw.hpp b/lib/imc_raw.hpp
index 4ecda6a..a7eafc9 100644
--- a/lib/imc_raw.hpp
+++ b/lib/imc_raw.hpp
@@ -315,77 +315,6 @@ namespace imc
       return channels;
     }
 
-    // get specific channel data
-    // TODO generalize and simplify channel extraction!!
-    // imc::channel_tab get_channel(std::string channel)
-    // {
-    //   // declare single channel table
-    //   imc::channel_tab chtab;
-    //
-    //   // ordinate parameters
-    //   std::string yunit = std::string("");
-    //   unsigned long int num_samples = -1;
-    //   // imc::datatype dtype;
-    //   int numbits = -1;
-    //   double yoffset = -1.0, yfactor = -1.0;
-    //
-    //   // abscissa parameters
-    //   double dx = -1.0;
-    //   double xoffset = -1.0;
-    //   std::string xunit = std::string("");
-    //
-    //   // search block for required parameters
-    //   for ( imc::block blk: this->rawblocks_ )
-    //   {
-    //     if ( blk.get_key() == imc::keys.at("CR") )
-    //     {
-    //       yunit = blk.get_parameter(blk.get_parameters()[7]);
-    //     }
-    //
-    //     if ( blk.get_key() == imc::keys.at("Cb") )
-    //     {
-    //       num_samples = std::stoul(blk.get_parameter(blk.get_parameters()[7]));
-    //       xoffset = std::stod(blk.get_parameter(blk.get_parameters()[11]));
-    //     }
-    //
-    //     if ( blk.get_key() == imc::keys.at("CP") )
-    //     {
-    //       numbits = std::stoi(blk.get_parameter(blk.get_parameters()[5]));
-    //     }
-    //
-    //     if ( blk.get_key() == imc::keys.at("CR") )
-    //     {
-    //       yfactor = std::stod(blk.get_parameter(blk.get_parameters()[3]));
-    //       yoffset = std::stod(blk.get_parameter(blk.get_parameters()[4]));
-    //       yunit = blk.get_parameter(blk.get_parameters()[7]);
-    //     }
-    //
-    //     if ( blk.get_key() == imc::keys.at("CD") )
-    //     {
-    //       std::cout<<"got CD\n";
-    //       dx = std::stod(blk.get_parameter(blk.get_parameters()[2]));
-    //       xunit = blk.get_parameter(blk.get_parameters()[7]);
-    //     }
-    //   }
-    //
-    //   std::cout<<"yunit:"<<yunit<<"\n"
-    //            <<"yoffset:"<<yoffset<<"\n"
-    //            <<"yfactor:"<<yfactor<<"\n"
-    //            <<"numbits:"<<numbits<<"\n"
-    //            <<"num_samples:"<<num_samples<<"\n"
-    //            <<"dx:"<<dx<<"\n"
-    //            <<"xoffset:"<<xoffset<<"\n"
-    //            <<"xunit:"<<xunit<<"\n";
-    //
-    //   // generate abscissa data
-    //
-    //
-    //   // generate ordinate data
-    //
-    //
-    //   return chtab;
-    // }
-
   };
 
 }